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This subject contains information from the Expanded Cthulhu Mythos, and not based on H.P. Lovecraft's works directly. The Revelations of Glaaki is a holy text containing the wisdom of the Great Old One Glaaki.

A 12 volume book in English, written by the members of the Cult of Glaaki atop Mercy Hill between 1800-1865. The book is fragmentary, with one cult member taking up where the last left off, and deals with the worship, powers and methods of summoning Glaaki, Y'golonac, Daoloth and other Great Old Ones.

The book was published in a pirated, edited 9 volume version, published in 1865 as a folio, which is more common. A rumour claims that originally there were only 11 volumes but a man on Mercy Hill (England) dreamed and wrote the 12th volume. Copies of the 9 vol. version are held by many major libraries and by private collectors. Hand-written 11 (a set of old type loose-leaf notebooks, the pages covered in archaic handwriting) and 12 volume versions are almost unheard of. There has been some talk of volumes 13 or 14, but such volumes are unknown.


  • A history of Glaaki's travels amongst the stars in the many long years before he settle on Earth.
  • The Daoloth formula, a ritual designed to invoke the presence of Daoloth.
  • The Pentacle of Planes, instructions on how to create a magical barrier which will prevent entities such as the aforementioned Daoloth from manifesting in our universe.


  • I. On Conjuration
  • II. On the Purposes of Night
  • III. Of the Uses of the Dead
  • IV. Of the World as Lair
  • V. Of the Secrets Behind the Stars
  • VI. Of Humanity as a Chrysalis
  • VII. Of Things Seen by the Moon
  • VIII. Of the Symbols the Universe Shows
  • IX. Of the Dreaming of Creation
  • X. On Preparing the Table
  • XI. On Passing From View (endnotes)


. . . for even the minions of Cthulhu dare not speak of Y'golonac; yet the time will come when Y'golonac strides forth from the loneliness of aeons to walk once more among men . . . - The Revelations of Glaaki, vol 12'
~ "Cold Print" , Ramsey Campbell

Beyond a gulf in the subterranean night a passage leads to a wall of massive bricks, and beyond the wall rises Y'golonac to be served by the tattered eyeless figures of the dark. Long has he slept betond the wall, and those which crawl across the bricks scuttle across his body never knowing it to be Y’golonac; but when his name is spoken or read he comes forth to be worshipped or to feed and take on the shape and soul of those he feeds upon. For those who read of evil and search for it’s form within their minds call forth evil, an so May Y'golonac return to walk among men and await that time when the earth is cleared off and cthulhu rises from his tomb among the weeds, Glaaki thrusts open the crystal trapdoor, the brood of Eihort are born into daylight, Shub-Niggurath strides forth to smash the moon-lens, Byatis bursts forth from his prison, Daoloth tears away illusion to expose the reality behind.
~ "Cold Print" , Ramsey Campbell

Many are the horrors of Tond, the sphere which revolves about the green sun of Yifne and the dead star of Baalblo. Few come near to humanity, for even the ruling race of yarkdao have retractable ears in humanoid bodies. Their gods are many, and none dares interrupt the priests of Chig in their ritual, which lasts three years and a quarter, or one puslt. Great cities of blue metal and black stone are built on Tond, and some yarkdao speak of a city of crystal in which things walk unlike anything living. Few men of our planet can see Tond, but those who know the secret of the Crystallizers of Dreams may walk it’s surface unharmed, if the Crystallizer's hungry guardian does not scent them.
~ "The Inhabitant of the Lake" , Ramsey Campbell

One world embeds into another and sits like an egg in a nest. Great Gla’aki lingers there and dreams. The fact of the god draws those who know not what they seek, nor do they seek. But they are sought. The day will come when those underneath will outnumber those above. On that day, Great Gla’aki will reign, though he will not know it.
~ "In Search of Lake Monsters" , Robert M. Price

Those who would know the unknowable truths of the universe, those who would attain the unattainable, must sacrifice all human vestments so that they may be reborn and perceive not only the unveiled nature of the universe, but of themselves as well.
~ "The Collection of Gibson Flynn" , Pete Rawlik

All Life is the instrument of the Magus, and remains in his power after the pupation which blind men tied to this rock call Death. Some call forth the lich to do their bidding, as servitors or consorts. Some gloat upon the insights every decaying brain doth suffer, or employ alchemical salt and ash to call the secrets of the Past contained in the Present. Yet the greatest of all such services comes from the corpus which has been revived immediately after its last breath. Its existence may be prolonged at the will of the Sorcerer, and its mind may be employed to plumb levels of darkness where even its Master feareth to tread” — ‘Percy Smallbeam’ (pseudonymous work with several Authors and one Redactor)— The Revelations of Gla’aki: OF THE USES OF THE DEAD 9:32
~ "I Want to Break Free" , Edward Morris